Work

Effects of Annealing Temperature on the Thermoelectric Properties and Microstructure of Ag0.6Pb18Sb5Te20

Year: 2017

Type: article

Abstract: ZTPbTe and Sb 2 Te 3 , two of the most common thermoelectric materials, have stable mid-and high-temperature thermoelectric properties.Both can be tuned as either N-type or P-type semiconductors.The figure of merit (ZT) values of the PbTe and Sb 2 Te 3 thermoelectric materials currently available on the market are around 0.8 and close to 1, respectively.In this study, Pb 18 Sb 5 Te 20 was used as a substrate and Ag was then added to form an Ag 0.6 Pb 18 Sb 5 Te 20 alloy.A comparison of thermoelectric properties between test pieces annealed at temperatures of 200, 400, and 600 °C and unannealed ones was conducted.The results revealed that the Ag 0.6 Pb 18 Sb 5 Te 20 alloy annealed at 600 °C had the best thermoelectric properties.The experimental methods used in this study included the preparation of bulk material using vacuum arc melting, X-ray diffration (XRD) analysis, a comparison with the Joint Committee on Powder Diffraction Standard (JCPDS) database to confirm the face-centered rhombohedral crystal structure, and a study of thermoelectric properties such as the Seebeck coefficient, thermal conductivity, and resistivity.The objective is the improvement of the material thermoelectric figure of merit ZT.

Source: Sensors and Materials

DOI: 10.18494/sam.2017.1737

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $748

Funder: Ministry of Science and Technology, Taiwan

Award: Mechanical Property, Fracture Mechanism and Corrosion Characteristic of Ti-Based Bulk Metallic Glasses Alloy under Different Processes and Element Additions

OpenAlex ID: W4238506993